David Bacon Central Valley farm workers organize in McFarland. Capital & Main is an award-winning publication that reports from California on economic, political and social issues. The American Prospect is co-publishing this piece. C alifornia growershave complained of a tight labor market for years. And President Trump’s dispatch of military units to the border, along with a decade of deportations, have tightened that market even more by restricting the flow of migrants into the fields. This recipe for confrontation has produced an escalating legal battle in Washington, D.C., and a walkout by hundreds of tangerine pickers in the Central Valley. Growers have increasingly turned to H-2A visas for guest workers as a remedy, with the decade ending in 2018 seeing a more than 370 percent increase, with no decline in sight. Although some growers have signed union contracts and provided better wages and benefits in order to attract a stable workforce, others are not happy with the...